Car-barn trolley attachment.



J. W. PERRY.l GAR BARN TROLLEY ATTACHMENT.

APPLICATION FILED JUNE 6. 1908.

. Patented Dec. 22, 1908.

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4 SHEETS-SHEET 2.

Patented Deo. 22, 1908.

J. W. PERRY. OAR BARN TROLLEY ATTACHMENT.

APPLICATION FILED JUNE 6, 1908.

J. W. PERRY. GAR BARN TROLLEY ATTAGHMPNT` APPLICATION FILED JUNE 6,1908.

907,522. IAtem-A'lSll;UIP

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CAR BARN TROLLE ATTACHMENT. APPLICATION FILED JUNE 6, 1908.

90?,522. Patente@ Dec. 22, 1908.

. SHEETS-SHEET 4.

justed by tension bolts 37, 38 and thumb nuts 39 and 40. Connected tothese contact springs are the socket pieces 51 and 52 to which areconnected ordinary conducting wires not shown, through which currentpasses to the controller and motor. These connections arediagrammatically representedin Fig. 1 by wires 56 and 57.

Y Cooperating with the Contact springs 20 are contact arcs 49 and 50 onsectors 59 and 60, which are mounted on the pivot shafts 29 and 30.'lhese ivot shafts are rigidly connected to the two ranches 27 and 28 ofthe forked lower end of the trolley arm, and are journaled in thehousings 31 and 32. The Whole constructionis hollow 'and the upper endof the trolley arm socket 21 is split to receive the main portion of thetrolley arm 7 which is clamped in place by the screw bolt 22. Ihe up erend of the trolley arm 7 receives the socket 23 in which the sphericalAmember 24 is loosely placed and held within certain limits of movementby the split in 25. 'lhis spherical member 24 is exten ed and formed intwo parts as shown in Fig. 4, which parts are held together by bolts 26,26, or other convenient means and inclose a ball of molded insulatingmaterial 41. In this insulating material 41 is a two-part metalliccouplinU 42 within which are the enlarged heads of the roller bearingshafts 43 and 44.l On these 'shafts outside of the insulation 41 aremounted the contact collars 63 and 64 to which are connected conductors45 and 46 passing down the trolley'arm through the iollow fork at thelower' end of the trolley arm and through thehollow pivot shafts to thecontact sockets 47 and 48 which are connected to the Contact arcs 49 and50 on the sectors 59- and 60.- 'lihis affords a metallic connection fromeach contact arc to the trolley roller on each side and the conductors45 and 46 passing throu h the opening 55 into the interior of the hollowtrolley arm are well protected.

On each pivot sha-ft is loosely ournaled a bell crank lever just outsideof the casing` 54. The bell crank lever 9 has a laterally extending toe33 on its short arm which extends under the branch 27 of the trolley armfork and has a retracting spring 35 which normally tends to hold'it inthe position shown in full lines in Fig. 2. Similarly, the bell cranklever 1() has a laterally Yrejecting toe 34 engaging thc branch 28 oftllie trolley arm fork and a retracting spring 36.

Such being the construction of my apparatus, the operation is asfollows: Norma ly, the trolley arm is down, resting upon the roof of thetrolley car and the contact arcs 4S) and 50 are out of contact withthecontact springs 2l), 20. Thus the possible connection between theItrolley wire and the motor circuit is broken at two points. Normally,the car is driven over the track by current derived from the plowrunning in the con-j duit in the usual manner, or by an inde endT entoverhead contact device not slibwni When the car enters the car barnsthe plow is removed, or the conductors are removed from the conduit andspecial trolley wires'l-,i and 4 are arranged over all the tracks andswitches in the barn. In order to operate his oar, the motorman mustthen seize on f of the handles 13 or 14, and pull down on thel same,thus rotating the bell crank lever con` nected to it and lifting thetrolley arm an(1 trolley. :At or before thc time the trolleY rollerstouch the trolley wires, the contac arcs touch the contact springs 2()and th electric circuit is established through the conductors on thetrolley arm and the motor circuit on the car. This will shoot the cal'forward and the motorman can then release the motorman lets go of the.cord handle,i the trolley arm drops and the car is dead. Tlre ball andsocket joint 23, 24, enables the twopart trolley to adjust itself to thetwo trelley wires.

The advantages of my invention comprise the elimination of fire risk bysubstituting for ordinary current collecting devices of the car acurrent collecting apparatus normally out of contact with the currentconductors so that normally the car is protected from all possibility ofleakage currents and the positive intervention o an operator is requiredin'order to obtain the momentary ilow of current necessary to shift thecar from one place to another within the'barns.

In the( modified trolley head shown in Fi 6, there is a central Tpiece65, and two bal s of insulating material 418L and 41``carried on theends of the T, support the trolley roller shafts 43, 44` as before.

Of course also the trolley may be moved into o erative position by themotorman througli any means within his control other than the handles 13and 14, by having the cords or their equivalent connections extend toany other movable member within reach of his hand or foot.

While it is most convenient to have the operative connections extend towithin reach ofi the motorman, of course the principle of my inventionmight 'still be retained 1f the trolley arm were manually controlled byany other operator, so long as it requires positive action on the partof the operator to hold the trolley in contact, and contact isimmediately and automatically broken as soon as the positive action ofthe operator ceases.

7 0 and 71 'represent springs inserted in the cords 11 and 12 to take upany inequality or uncvcnness in the trolley wires.

l Il) fis 1. The combination with' a railroad car, anA kelectric motormounted thereon, a trolley having circuit connections tothe motor, and atrolley arm pivoted to said car and n'ormally lying down upon the roofof the car, of which the v Inotorman may temporary Contact with thetrolleywvire and hoh it there at will, said trolley arm falling?r `byits own weight to disengage the trolley lromjthe trolley wire when theinotorman releases his immediate control of said connections.

2. The combination with a railroad-cer, an electric motor mountedthereon, a trolley ',havingrcircuit connections to the motor, and

A` a"trolleyarin pivoted to said car and normally lying down upon the.roof ot the car, ot connections Yby which the motorman may lcontrol the.trolley arm to litt the trolley into temporary contact with the trolleywire and I hold it there at will, said trolley arm falling hyits ownweight to disengage the trolley from the trolley wire when the motorinanreleases his inimtahate control otv said connections, said connectionseom'prislng; hell cranks on 'the pivot shaft ol' the trolley arm, and

cords extending from said hell cranks to each end olI the car withinreach ol the motoi'man.

55. rl`hc combination with an electric rar, a trolley, and trolley arxinpivoted to said ear i and normally lying?r down upon the root ol thecar,. of connections hy which the inotorma-n 'may control the trolleyarm tolilt the trolley into temporary contar-t with the trolley wire andhold it there at will, said trolley -arni fallinbr hy its o wn weight todisengage the trolley l'ron'i the trolley wire when the motorinanreleases his immediate control ot' said connections, an electric circuitin said ear, and means` hy which the trolley is automatically connectedwith said circuit when raised aml disconnected tluerel'rom when lowered.

l; 'l`he combination with a wheeled, vehil cle, an electric motor, ahinged current coilector mounted on saidA vehicle, in rire-uit with theelectric motor when in operative position, hut normally resting; in aposition to v kee it out ol' contact with anv coo )eratinlr P)statioinu'y current e'oznluctory ol' connections hy which the operatormay positively control the hinged current collector tolorce it intotemporary contact with the current conductor, said'trolley armautomatically returning to a position out of such Contact when theoperator releases his positive control of the connections.

5. In an electric railroad system the combination' with undergroundconductors and a car provided with Contact makin devices therefor, of astorage section for sai railroad l'aliing hy its own weight *wheneversaid positive control is released.

6. ln 'an electric railroad system the coinhination with undergroundconductors and a car provided with contact making devices therefor, ol astorage section for said railroadV provided with overhead conductorsy atrolley mounted on the ear adapted to normally remain out. ollengagement with the overhead conductors, and means controlled by theinotorman lor forcing the trolley into` ten'iporary -contaet with theoverhead conductor and holding it there only while the inotormanpositively exercises his control of said means, said trolley arinfalling hv its own weight whenever said positive. cont rol is released.

7. 'lhe combination with a trolley arm having: a hil'ureated lower endand inwardly extending pivots, ol a rar having journal hearings l'orsaid era-nk lever journa ed on each pivot and havint:r a laterallyextending toe engaging the under side ot the adjacent portion olI thehit'ur- Vcated end ol the trolley arm, a spring for each hell cranklever normally acting to'hold the` tree arm of said lever upward, acord` extend ing; from the lree end ol one hell crank lever to' one vendoll the car and a second cord ruin ning' l'rom the l'ree end of theother bell crank' ivots on its root', a bell4

